Fertilizer

ABSTRACT

A fertilizer in the form of a concentrated dispersion of undissolved nutrient materials in an aqueous medium containing said same and/or other nutrient materials in solution, the dispersion also containing as dispersants, magnesium-aluminum silicate and at least one additional dispersant selected from the group consisting of sorbitol, polyvinyl alcohol, caseinate, and soluble starch hydrolysates whereby the formation of large crystals of said nutrients and phase separation is avoided over prolonged periods of time of up to three years. The invention also includes the method for making such fertilizers.

This is a continuation of application Ser. No. 283,674, filed July 15,1981 which is a continuation of application Ser. No. 97,878 filed onNov. 27, 1979, which is a continuation of application Ser. No. 969,525filed on Dec. 14, 1978 which is a continuation of Ser. No. 548,002 filedFeb. 7, 1975, all now abandoned.

The invention relates to a fertilizer in the form of a dispersion ofundissolved nutrient materials in an aqueous solution of nutrientmaterials, the dispersion containing a hydrated magnesium aluminumsilicate and an additional dispersing agent.

Such fertilizers are referred to as suspension fertilizers. Theundissolved nutrient materials in such suspension fertilizers aremaintained in suspension in the form of finely divided solids bydispersing agents. Suitable dispersing agents are hydrated magnesiumaluminum silicates, such as attapulgite and bentonite, and furthermoreorganic compounds such as polysaccharides (Ullmanns Encyklopadie dertechnischen Chemie, third edition, supplementary volume (1970) pages359-540).

The German Offenlegungsschrift No. 1,667,798 describescarboxymethylcellulose as an organic colloidal suspension stabilizer fora suspension fertilizer containing no silicate. A disadvantage of suchsuspension fertilizers is that upon dilution with water, gel particlesare formed which can be dissolved only very slowly.

U.S. Pat. Nos. 3,148,970, 3,160,495 and 3,234,004 described suspensionfertilizers which in addition to attapulgite may contain tetrasodiumpyrophosphate as a dispersing agent. This pyrophosphate has the formulaNa₄ P₂ O₇.

U.S. Pat. No. 3,579,321 describes that spent phosphoric acid which hasbeen used in metallurgy and contains metallic impurities can be used formaking suspension fertilizers by adding lignin sulfonates and clay. Thelignin sulfonates prevent the formation of a gelatinous precipitatewhich would otherwise be produced when adding ammonium hydroxide to thespent acid.

The known suspension fertilizers have a narrowly restricted storagestability, for the crystal-containing nutrient material suspensions aresubject to comparatively rapid sedimentation of the solids, so that insome cases even after storage for only a few hours considerabledifferences in concentration can be detected within the individualliquid ranges. When storing the known suspension fertilizers thissedimentation must be prevented, e.g. by agitating the crystalsuspensions at regular intervals or by rehomogenizing them by a smallair stream. The crystal suspensions stabilized with magnesium aluminumsilicate show in addition a continuous coarsening of the crystallinecontent, and this phenomenon is greatly accelerated by fluctuations ofthe storage temperature. This is the case in particular if the suspendednutrient materials consist only of readily soluble salts. When thetemperature rises part of these salts passes from the suspended phase tothe dissolved phase, and when the fertilizer is subsequently cooledlarge crystals precipitate.

Netherlands Patent Application No. 6,902,342 laid open to publicinspection describes an aqueous suspension fertilizer which comprisesNPK (nitrogen, phosphorus, potassium) plant nutrient materials,water-soluble polyphosphate and a water-soluble magnesium compound. Thisfertilizer may additionally contain attapulgite or bentonite. Thisfertilizer shows improved sedimentation behaviour and retarded formationof large crystals. However, the suspensions prepared by the methoddescribed have to be used comparatively quickly, i.e. after storage fora few months, similarly to the other suspensions just described.

It is an object of the present invention to provide a suspensionfertilizer which in addition to an increased storage stability withoutphase separation, exhibits a still further reduced crystal growth sothat after prolonged storage (for example for 2 to 3 years) asatisfactory suspension can be obtained by reblending. The advantageover the known suspension fertilizers primarily consists in that theduration of storage stability is considerable increased without thenecessity of continuous or regular mechanical blending.

According to the invention this object is achieved by a suspensionfertilizer of the type described which is characterized in that itcontains as an additional dispersing agent at least one materialselected from the group comprising sorbitol, polyvinyl alcohol,caseinate and soluble starch hydrolysates.

A preferred embodiment of the suspension fertilizer according to theinvention is characterized in that it also contains sodiumpolyphosphate.

A further advantageous embodiment of the suspension fertilizer accordingto the invention is characterized in that it also contains ligninsulfonic acids or the salts thereof.

A modified embodiment of the suspension fertilizer of the invention ischaracterized in that the fertilizer contains lignin sulfonic acids orsalts thereof and sodium polyphosphate (instead of sorbitol, polyvinylalcohol, caseinates and/or soluble starch hydrolysates).

The dispersing agents are used in concentrations from 0.1% to 14% byweight calculated with respect to the finished fertilizer. The followingspecific concentrations also are calculated with respect to the finishedproduct.

Sorbitol can be used, for example, in the form of the commerciallyavailable products Karion in the form of sand like grains, Karion Fliquid, Karion 83 from Merck AG., Darmstadt. Preferably amounts of 0.1%to 5% by weight are used.

As the polyvinyl alcohol (PVA) use may be made, for example, of theOrganal types of Maizena Industrieprodukte GmbH., types 9700S and 9850S,which have a degree of hydrolysis of 98% to 99% by weight. Preferablyamounts of 0.1% to 5% by weight are used.

Suitable salts of lignin sulfonic acid are, for example, the Totanintypes of A/S Toten Cellulosefabrik Nygard St, Norway: Totanin, TotaninF, Totanin NA, Totanin F NA, Totanin MG, Totanin G MG. Thesecompositions contain, in addition to the various salts of the ligninsulfonic acid (NH₄ +, Ca, Mg, Na) the hexoses: mannose, galactose,glucose, and the pentoses xylose and arabinose. Use may also be made ofmodified products in which sugar amines have formed by heating. Theproducts used in the experiments described hereinafter were entirelysoluble in water and had about the following mean chemical data:

weight by volume: 0.7 kg/l

tanin content: 52.0%

lignin sulfonates total amount: 70.0%

high molecular weight: 43.0%

low molecular weight: 28.0%

reducing substance (calculated as glucose): 20.0%

uronic acids: 3.7%

methoxyl (OCH₃): 9.3%

The amounts used preferably are 0.1% to 8% by weight.

Preferred caseinates are alkaline metal and alkaline earth metalcaseinates, in particular in amounts of 0.1% to 5% by weight.

The soluble starch hydrolysate used preferably is glucose syrup, inparticular a mixture of simple and multiple sugars as such is used toprevent crystallization of saccharose in fondants. It is true that suchsoluble starch hydrolysates contain among other constituentspolysaccharides, however, (in contradistinction tocarboxymethylcellulose) they do not promote gelation. Use may be made,for example, of glucose syrup of the Deutsche Maizena-Werke GmbH.,Hamburg, in particular the types 43 and 45. The content of reducingsugar is about 40%. The sugars are composed of:

D-glucose: about 18.0%

disaccharides (maltose): about 14.0%

polysaccharides and saccharides of high molecular weight: about 68.0%

specific weight (20° C.): 1.4-1.5

refractive index (20° C.): 1.4915-1.5049

pH: 4.8-5.2

The amounts used preferably are 0.1% to 8% by weight.

It should be mentioned that Japanese Patent Application No. 15,980/67describes a liquid suspension fertilizer of increased suspensionstability which contains, in addition to bentonite, lixiviated molassesor glucose. However, the feature of the invention is not obtainable bymeans of glucose, for in comparative experiments it was found thatalthough the addition of glucose reduces the settling rate ofsuspensions, it does not inhibit crystal growth. Hence glucose cannot becompared to glucose syrup neither with respect to its composition norwith respect to its effect.

A suitable sodium polyphosphate is, for example, a white hygroscopicpowder consisting of sodium polyphosphate of medium chain length. Suchpolyphosphates are distinguished both in chemical composition and ineffect from the aforementioned diphosphate which is known as adispersing agent for suspension fertilizers and is a low-condensationphosphate. A suitable sodium polyphosphate is, for example, Calgon N ofBenckiser-Knapsack GmbH, Ludwigshafen/Rhein, the analysis data of whichare:

total content of P₂ O₅ : about 60%

pH of a 1% solution: 7.2-7.5

Preferably about 0.1% to 6% by weight is used.

The suspension fertilizer according to the invention can be formulatedboth as a mineral single-nutrient fertilizer and as a mineralmultinutrient fertilizer. As constituents of the mixture bothwater-soluble and non-water-soluble nutrient salts may be used. The factthat entirely soluble nutrient salts can be used within the scope of theinvention is remarkable in that, as has been mentioned hereinbefore,suspensions of these salts are more liable to "salt out" owing totemperature fluctuations than the suspensions of poorly soluble mineralsalts (when the temperature is increased the initially suspendedentirely soluble mineral salts are dissolved; upon subsequent coolingthey separate in the form of crystals). This means that the dispersingagent in the suspension fertilizer according to the invention producesinhibition or retardation of crystallization. In addition it preventsany crystals which still may be formed, for example under extremestorage conditions, from growing excessively. In detail the suspensionfertilizers according to the invention may have the following contentsof nutrient materials:

A. Mineral one-nutrient fertilizers

(a) Nitrogen fertilizers containing from 1% to 40% of nitrogen in theform of ammonium, nitrate or amide.

(b) Phosphate fertilizer having a content of P₂ O₃ of 1%-50%.

(c) Potassium fertilizer having a content of K₂ O of 1%-40%.

B. Mineral multinutrient fertilizers

(a) NPK fertilizers having contents of N of 1%-30%, contents of P₂ O₅ of1%-60% and contents of K₂ O of 1%-30%.

(b) NP fertilizers having contents of N of 1%-30% and contents of P₂ O₅of 1%-50%.

(c) NK fertilizers having contents of N of 1%-40% and contents of K₂ Oof 1%-40%.

(d) PK fertilizers having contents of P₂ O₅ of 1%-45% and contents of K₂O of 1%-40%.

The aforementioned fertilizers are made either by suspending thecorresponding inorganic salts together with urea or by preparing thesaid salts by neutralization in the presence of urea and subsequentcooling of the solution with crystallization.

The fertilizers according to the invention may have trace elements addedto them in arbitrary concentrations either in the form of salts or aschelates. Fully chelated trace elements are preferred, for example amixture of trace element sulfates, (Co, Mo, Zn, Cu, B, Mn, Fe),chelating agents (ethylene diametetraacetic acid, nitrilotriacetic acid)and possible secondary plant nutrients (vitamins, hormones). In theformulations listed hereinafter such a chelate mixture will be referredto as "chelated trace elements".

The fertilizer according to the invention may further containpesticides, in particular herbicides. Liquid pesticidal substances whichare not miscible with water may be incorporated in the fertilizersuspensions by the use of special emulsifying agents. Water-solublepesticidal active substances are actually dissolved in the liquid phaseof such a suspension. Non-water-soluble solid active substances can beincorporated in the dispersed part of the suspension by using specialdispersing agents. Such results are obtainable in particular when usingthe following active substances:

parathion--O,O-diethyl-O-(4-nitrophenyl)-monothiophosphate

carbaryl--N-methyl-1-naphthyl-carbamate

captan--N-(trichloromethylthio)-4-cyclohexene-1,2-dicarboximide orN-(trichloromethylthio)tetrahydrophthalimide

dicamba--3,6-dichloro-2-methoxy-benzoic acid or 3,6-dichloro-o-anisicacid

2,4-D--2,4-dichlorophenoxyacetic acid (butyl, isopropyl or 2-ethylhexylester)

For the purpose of mixing in the form of an emulsion the emulsifyingagents HJP 1, HJP 2 and Emcol AC 61/17 were used in concentrations of1%-5% (specific weight 1,035; pH of the 3% dispersion 5.7-6.0, watercontent 11%). As an adjuvant for suspension Drysperse 406 and Drysperse407 were used in concentrations of 1%-8%. These adjuvants aremanufactured by Witko-Chemical, NEW YORK. The use of these adjuvantsenables mixtures of fertilizers and pesticides to be made which containfrom 1% to 50% of pesticidal active substances.

For homogenizing the fertilizer constituents a device may be used asmanufactured by Hoelscher-Technik, Herne/Westfalia, under the trade nameGorator R. This device was developed from a centrifugal pump, however,the rotor is an inclined disc instead of a normal pump impeller. Whenthe disc rotates, superposed flow movements are produced in the pumpwhich effect thorough mixing, causing pulverizing of the crystals anddelivery of the fertilizer.

The suspension fertilizers according to the invention are advantageouslydistinguished from the known suspension fertilizers in that they can beresuspended even after prolonged storage and are entirely soluble inwater with the exception of a small insoluble residue of formationadjuvants. Storage stability, resuspendibility and solubility last formore than one year. Hence the suspension fertilizers according to theinvention are fully comparable to liquid fertilizers which are marketedall over the world and according to their nature are real saltsolutions. Whereas the known suspension fertilizers can only be usedundiluted, the suspension fertilizers according to the invention canalso be used as concentrates which before use can simply be diluted withwater so that the nutrient materials are completely and reallydissolved. This provides the further advantage that the suspensionfertilizers according to the invention can also be used as leaffertilizers. As is known, leaf fertilizers provide rapid effects only ifall the nutrient materials are really dissolved.

For use as leaf fertilizers it also is advantageous that some of thesuspension fertilizers according to the invention contain glucose.Glucose is also absorbed by the leaf surfaces and is utilized by theplant.

The following examples are given to illustrate more fully the practiceof this invention.

EXAMPLE 1

205.0 kg of diammonium phosphate are produced by neutralizing phosphoricacid with ammonia in the presence of 205.0 kg of water, 30.0 kg ofpotassium sulfate, 85.0 kg of potassium nitrate and 9.0 kg of potassiumchloride are added, in this sequence, to the hot salt solution, afterwhich the mixture was homogenized by means of a worm conveyor, Gorator.Then 102.0 kg of urea are added, after which homogenization iscontinued. A refrigerating device in the Gorator keeps the suspensionbeing produced at room temperature. The wet grinding operation bycontinuous circulation is continued until the desired fineness isobtained. Subsequently 15 kg of Mg-Al silicate and 35 kg of glucosesyrup are added. Finally 80 kg of phosphoric acid are added. Theresulting crystal suspension is circulated until it is completelyhomogenized.

EXAMPLE 2

102.0 kg of diammonium phosphate are produced by neutralizing phosphoricacid with ammonia in the presence of 205.0 kg of water. 30.0 kg ofpotassium sulfate, 85.0 kg of potassium nitrate and 9.0 kg of potassiumchloride are added, in this sequence, to the hot salt solution, and themixture is then homogenized by means of a worm conveyor Gorator.Subsequently 102.0 kg of urea are added, after which homogenization iscontinued. A refrigerating device in the Gorator maintains thesuspension being produced at room temperature. The wet grindingoperation by continuous circulation is continued until the desiredfineness is obtained. Subsequently 8.0 kg of Mg-Al silicate, 7,5 kg ofcaseinate and 7.5 kg of glucose syrup are added. 40.0 kg of phosphoricacid and subsequently 100.0 kg of Emcol HJP 1 are added and finally300.0 kg of ethylparathion is initimately admixed therewith. Theresulting mixture is circulated until it is completely homogenized.

EXAMPLE 3

205.0 kg of diammonium phosphate are produced by neutralizing phosphoricacid with ammonia in the presence of 198.0 kg of water. 60 kg ofpotassium sulfate, 170.0 kg of potassium nitrate and 19.0 kg potassiumchloride are added, in this sequence, to the hot salt solution, afterwhich the mixture is homogenized, by means of a worm conveyor Gorator.Then 203.0 kg of urea are added, after which homogenization iscontinued. A refrigerating device in the Gorator maintains thesuspension being produced at room temperature. The wet grinding processby continuous circulation is continued until the desired degree offineness is reached. Then 15 kg of Mg-Al silicate, 35 kg of glucosesyrup and 15 kg of Na polyphosphate are added. Finally 80 kg phosphoricacid are admixed therewith. The resulting crystal suspension iscirculated until it is completely homogenized.

EXAMPLE 4

205.0 kg of diammonium phosphate are produced by neutralizing phosphoricacid with ammonia in the presence of 180.0 kg of water. 60.0 kg ofpotassium sulfate, 170.0 kg of potassium nitrate and 19.0 kg ofpotassium chloride are added, in this sequence, to the hot saltsolution, after which the mixture was homogenized by means of a wormconveyor Gorator. Then 203.0 kg of urea are added, after whichhomogenization is continued. A refrigerating device in the Goratormaintains the suspension being produced at room temperature. The wetgrinding process by continuous circulation is continued until thedesired degree of finess is reached. Then 15.0 kg of Mg-Al silicate,30.0 kg of glucose syrup and 30.0 kg of lignin sulfonic acid are added.Finally 80.0 kg of phosphoric acid are admixed therewith. The resultingcrystal suspension is circulated until it is completely homogenized.

EXAMPLE 5

10.20 kg of diammonium phosphate are produced by neutralizing phosphoricacid with ammonia in the presence of 205.0 kg of water. 30.0 kg ofpotassium sulfate, 85.0 kg of potassium nitrate and 9.0 kg of potassiumchloride were added, in this sequence, to the hot salt solution, afterwhich the mixture was homogenized by means of a worm conveyor Gorator.Then 102.0 kg of urea are added and homogenization is continued. Arefrigerating device in the Gorator maintains the suspension beingproduced at room temperature. The wet grinding process by continuouscirculation is continued until the desired degree of fineness isreached. Then 8.0 kg of Mg-Al silicate, 7.5 kg of lignin sulfonic acidand 7.5 kg of glucose syrup are added. After the addition of 40.0 kg ofphosphoric acid; 100.0 kg of Emcol HJP 1 are added and finally 300.0 kgof ethyl parathion are intensively admixed therewith. The resultingmixture is circulated until it is completely homogenized.

According to the above basic examples the following formulations, givenby way of example, may be made:

    ______________________________________                                        1. Formulations including sorbitol                                            (a) NPK = 16/16/12                                                            chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               sorbitol                25.0 kg                                               phosphoric acid         80.0 kg                                               water                   215.0 kg                                                                      1000.0 kg                                             (b) NPK = 10/-/20                                                             chelated trace elements, see above                                                                    8.0 kg                                                caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               sorbitol                25.0 kg                                               water                   281.0 kg                                                                      1000.0 kg                                             (c) NPK = 25/6/10                                                             chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al--silicate        15.0 kg                                               sorbitol                25.0 kg                                               water                   104.0 kg                                                                      1000.0 kg                                             (d) NPK = 20/-/15                                                             chelated trace elements, see above                                                                    8.0 kg                                                ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    220.0 kg                                              Mg--Al silicate         15.0 kg                                               sorbitol                25.0 kg                                               water                   316.0 kg                                                                      1000.0 kg                                             (e) NPK MgCa = 10/-/-/2/15                                                    chelated trace elements, see above                                                                    8.0 kg                                                calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               sorbitol                25.0 kg                                               water                   264.0 kg                                                                      1000.0 kg                                             2. Formulations containing polyvinyl alcohol                                  (a) NPK = 16/16/12                                                            chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               polyvinyl alcohol       30.0 kg                                               phosphoric acid 85%     80.0 kg                                               water                   210.0 kg                                                                      1000.0 kg                                             (b) NPK = 10/-/20                                                             chelated trace elements, see above                                                                    8.0 kg                                                caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               polyvinyl alcohol       30.0 kg                                               water                   276.0 kg                                                                      1000.0 kg                                             (c) NPK = 25/6/10                                                             chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    77.0 kg                                               phosphoric acid         31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               polyvinyl alcohol       30.0 kg                                               water                   9.0 kg                                                                        1000.0 kg                                             (d) NPK = 20/-/15                                                             chelated trace elements, see above                                                                    8.0 kg                                                ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               polyvinyl alcohol       30.0 kg                                               water                   311.0 kg                                                                      1000.0 kg                                             (e) NPK MgCa = 10/-/-/2/15                                                    chelated trace elements, see above                                                                    8.0 kg                                                calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               polyvinyl alcohol       30.0 kg                                               water                   259.0 kg                                                                      1000.0 kg                                             3. Formulations including caseinates                                          (a) NPK = 16/16/12                                                            chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               caseinate               30.0 kg                                               phosphoric acid 85%     80.0 kg                                               water                   210.0 kg                                                                      1000.0 kg                                             (b) NPK = 10/-/20                                                             chelated trace elements, see above                                                                    8.0 kg                                                caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               caseinate               30.0 kg                                               water                   276.0 kg                                                                      1000.0 kg                                             (c) NPK = 25/6/10                                                             chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               caseinate               30.0 kg                                               water                   99.0 kg                                                                       1000.0 kg                                             (d) NPK = 20/-/15                                                             chelated trace elements, see above                                                                    8.0 kg                                                ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               caseinate               30.0 kg                                               water                   311.0 kg                                                                      1000.0 kg                                             (e) NPK MgCa = 10/-/-/2/15                                                    chelated trace elements, see above                                                                    8.0 kg                                                calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               caseinate               30.0 kg                                               water                   259.0 kg                                                                      1000.0 kg                                             4. Formulations containing glucose syrup                                      (a) NPK = 16/16/12                                                            chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg-- Al silicate        15.0 kg                                               glucose syrup           35.0 kg                                               phoshoric acid 85%      80.0 kg                                               water                   205.0 kg                                                                      1000.0 kg                                             (b) NPK = 10/-/20                                                             chelated trace elements, see above                                                                    8.0 kg                                                caustic potash 45%      140.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               water                   570.0 kg                                                                      1000.0 kg                                             (c) NPK = 25/6/10                                                             chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               water                   94.0 kg                                                                       1000.0 kg                                             (d) NPK = 20/-/15                                                             chelated trace elements, see above                                                                    8.0 kg                                                ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               water                   306.0 kg                                                                      1000.0 kg                                             (e) NPK MgCa = 10/-/-/2/15                                                    chelated trace elements, see above                                                                    8.0 kg                                                calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               water                   254.0 kg                                                                      1000.0 kg                                             5. Formulations containing caseinate and glucose syrup                        (a.sub.1) NPK = 16/16/12                                                      diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               phosphoric acid 85%     80.0 kg                                               water                   198.0 kg                                                                      1000.0 kg                                             (a.sub.2) NPK = 16/16/12                                                      chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               phosphoric acid 85%     80.0 kg                                               Water                   190.0 kg                                                                      1000.0 kg                                             (b.sub.1) NPK = 10/-/20                                                       caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   264.0 kg                                                                      1000.0 kg                                             (b.sub.2) NPK = 10/-/20                                                       chelated trace elements, see above                                                                    8.0 kg                                                caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   256.0 kg                                                                      1000.0 kg                                             (c.sub.1) NPK = 25/6/10                                                       diammonium phosphate    77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   87.0 kg                                                                       1000.0 kg                                             (c.sub.2) NPK 32  25/6/10                                                     chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   79.0 kg                                                                       1000.0 kg                                             (d.sub.1) NPK = 20/-/15                                                       ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   299.0 kg                                                                      1000.0 kg                                             (d.sub.2) NPK = 20/-/15                                                       chelated trace elements, see above                                                                    8.0 kg                                                ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   291.0 kg                                                                      1000.0 kg                                             (e.sub.1) NPK MgCa = 10/-/-/2/15                                              calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   247.0 kg                                                                      1000.0 kg                                             (e.sub.2) NPK MgCa = 10/-/-/2/15                                              chelated trace elements, see above                                                                    8.0 kg                                                calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   239.0 kg                                                                      1000.0 kg                                             6. Formulations containing pesticides                                         (a) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                glucose syrup           15.0 kg                                               phosphoric acid 85%     40.0 kg                                               Dicamba K, Na--salt     200.0 kg                                              Drysperse               100.0 kg                                              water                   305.0 kg                                                                      1000.0 kg                                             (b) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                glucose syrup           15.0 kg                                               phosphoric acid 85%     40.0 kg                                               ethyl parathion         300.0 kg                                              Emcol HJP 1             100.0 kg                                              water                   205.0 kg                                                                      1000.0 kg                                             (c) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                glucose syrup           15.0 kg                                               phosphoric acid 85%     40.0 kg                                               Captan                  300.0 kg                                              Drysperse               100.0 kg                                              water                   205.0 kg                                                                      1000.0 kg                                             (d) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                caseinate               7.5 kg                                                glucose syrup           7.5 kg                                                phosphoric acid 85%     40.0 kg                                               ethyl parathion         300.0 kg                                              Emcol HJP 1             100.0 kg                                              water                   205.0 kg                                                                      1000.0 kg                                             (e) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                caseinate               7.5 kg                                                glucose syrup           7.5 kg                                                phosphoric acid 85%     40.0 kg                                               Captan                  300.0 kg                                              Drysperse               100.0 kg                                              water                   205.0 kg                                                                      1000.0 kg                                             (f) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                caseinate               7.5 kg                                                glucose syrup           7.5 kg                                                phosphoric acid 85%     40.0 kg                                               Dicamba K, sodium salt  200.0 kg                                              Drysperse               100.0 kg                                              water                   305.0 kg                                                                      1000.0 kg                                             7. Formulation containing sorbitol and sodium                                 polyphosphate                                                                 NPK = 20/4/8                                                                  chelated trace elements, see above                                                                    8.0 kg                                                potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         15.0 kg                                               sorbite                 25.0 kg                                               water                   274.0 kg                                                                      1000.0 kg                                             8. Formulation containing polyvinyl alcohol                                   and sodium polyphosphate                                                      NPK = 20/4/8                                                                  chelated trace elements, see above                                                                    8.0 kg                                                potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         15.0 kg                                               polyvinyl alcohol       30.0 kg                                               water                   269.0 kg                                                                      1000.0 kg                                             9. Formulations containing lignin sulfonic acid                               and sodium polyphosphate                                                      NPK = 20/4/8                                                                  chelated trace elements, see above                                                                    8.0 kg                                                potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         16.0 kg                                               lignin sulfonic acid    60.0 kg                                               water                   239.0 kg                                                                      1000.0 kg                                             10. Formulation containing caseinate and                                      sodium polyphosphate                                                          NPK = 20/4/8                                                                  chelated trace elements, see above                                                                    8.0 kg                                                potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         15.0 kg                                               caseinate               30.0 kg                                               water                   269.0 kg                                                                      1000.0 kg                                             11. Formulations containing caseinate and                                     glucose syrup                                                                 (a.sub.1) NPK = 16/16/12                                                      diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               phosphoric acid 85%     80.0 kg                                               water                   198.0 kg                                                                      1000.0 kg                                             (a.sub.2) NPK = 16/16/12                                                      chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               phosphoric acid 85%     80.0 kg                                               water                   190.0 kg                                                                      1000.0 kg                                             (b.sub.1) NPK = 10/-/20                                                       caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   264.0 kg                                                                      1000.0 kg                                             (b.sub.2) NPK = 10/-/20                                                       chelated trace elements, see above                                                                    8.0 kg                                                caustic potash 45%      140.0 kg                                              potassium sulfate       199.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   256.0 kg                                                                      1000.0 kg                                             (c.sub.1) NPK = 25/6/10                                                       diammonium phosphate    77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   87.0 kg                                                                       1000.0 kg                                             (c.sub.2) NPK = 25/6/10                                                       chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   79.0 kg                                                                       1000.0 kg                                             (d.sub.1) NPK = 20/-/15                                                       ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   299.0 kg                                                                      1000.0 kg                                             (d.sub.2) NPK = 20/-/15                                                       chelated trace elements, see above                                                                    8.0 kg                                                ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   291.0 kg                                                                      1000.0 kg                                             (e.sub.1) NPK MgCa = 10/-/-/2/15                                              calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   247.0 kg                                                                      1000.0 kg                                             (e.sub.2) NPK MgCa = 10/-/-/2/15                                              chelated trace elements, see above                                                                    8.0 kg                                                calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   239.0 kg                                                                      1000.0 kg                                             (12). Formulations containing glucose syrup and                               sodium polyphosphate                                                          (a.sub.1) NPK = 16/16/12                                                      diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               phosphoric acid 85%     80.0 kg                                               water                   198.0 kg                                                                      1000.0 kg                                             (a.sub.2) NPK = 16/16/12                                                      chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               phosphoric acid 85%     80.0 kg                                               water                   190.0 kg                                                                      1000.0 kg                                             (b.sub.1) NPK = 20/4/8                                                        potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               water                   272.0 kg                                                                      1000.0 kg                                             (b.sub.2) NPK = 20/4/8                                                        chelated trace elements, see above                                                                    8.0 kg                                                potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               water                   264.0 kg                                                                      1000.0 kg                                             (c.sub.1) NPK = 10/-/20                                                       caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               water                   264.0 kg                                                                      1000.0 kg                                             (c.sub.2) NPK = 10/-/20                                                       chelated trace elements, see above                                                                    8.0 kg                                                caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               water                   256.0 kg                                                                      1000.0 kg                                             (d.sub.1) NPK = 15/6/10                                                       diammoniumphosphate     77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               water                   87.0 kg                                                                       1000.0 kg                                             (d.sub.2) NPK = 25/6/10                                                       chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    77.0 kg                                               phosphoric acid 85%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    228.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               water                   79.0 kg                                                                       1000.0 kg                                             (e.sub.1) NPK = 20/-/15                                                       ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               water                   299.0 kg                                                                      1000.0 kg                                             (e.sub.2) NPK = 20/-/15                                                       chelated trace elements, see above                                                                    8.0 kg                                                ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               water                   291.0 kg                                                                      1000.0 kg                                             (f.sub.1) NPK MgCa = 10/-/-/2/15                                              calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               Mg chloride             101.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               water                   247.0 kg                                                                      1000.0 kg                                             (f.sub.2) NPK MgCa 10/-/-/2/15                                                chelated trace elements, see above                                                                    8.0 kg                                                calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               Na--polyphosphate       15.0 kg                                               water                   239.0 kg                                                                      1000.0 kg                                             13. Formulations containing caseinate, glucose syrup                          and sodium polyphosphate                                                      (a) NPK = 20/4/8                                                              potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   257.0 kg                                                                      1000.0 kg                                             (b) NPK = 20/4/8                                                              chelated trace elements, see above                                                                    8.0 kg                                                potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         15.0 kg                                               glucose syrup           35.0 kg                                               caseinate               15.0 kg                                               water                   249.0 kg                                                                      1000.0 kg                                             14. Formulations containing lignin sulfonic acid                              (a) NPK = 16/16/12                                                            chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    205.0 kg                                              potassium sulfate       60.0 kg                                               potassium nitrate       170.0 kg                                              potassium chloride      19.0 kg                                               urea                    203.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           30.0 kg                                               ligninsulfonic acid     30.0 kg                                               phosphoric acid 85%     80.0 kg                                               water                   180.0 kg                                                                      1000.0 kg                                             (b) NPK = 10/-/20                                                             chelated trace elements, see above                                                                    8.0 kg                                                caustic potash 45%      140.0 kg                                              potassium sulfate       299.0 kg                                              ammonium nitrate        26.0 kg                                               urea                    201.0 kg                                              ammonium sulfate        5.0 kg                                                Mg--Al silicate         15.0 kg                                               glucose syrup           30.0 kg                                               ligninsulfonic acid     30.0 kg                                               water                   246.0 kg                                                                      1000.0 kg                                             (c) NPK = 25/6/10                                                             chelated trace elements, see above                                                                    8.0 kg                                                diammonium phosphate    77.0 kg                                               phosphoric acid 45%     31.0 kg                                               potassium sulfate       27.0 kg                                               potassium nitrate       172.0 kg                                              potassium chloride      13.0 kg                                               ammonium nitrate        300.0 kg                                              urea                    218.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           30.0 kg                                               ligninsulfonic acid     30.0 kg                                               water                   69.0 kg                                                                       1000.0 kg                                             (d) NPK MgCa = 10/-/-/2/15                                                    chelated trace elements, see above                                                                    8.0 kg                                                calcium nitrate         556.0 kg                                              urea                    31.0 kg                                               magnesium chloride      101.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           30.0 kg                                               ligninsulfonic acid     30.0 kg                                               water                   229.0 kg                                                                      1000.0 kg                                             (e) NPK = 20/-/15                                                             chelated trace elements, see above                                                                    8.0 kg                                                ammonium nitrate        87.0 kg                                               potassium nitrate       327.0 kg                                              urea                    222.0 kg                                              Mg--Al silicate         15.0 kg                                               glucose syrup           30.0 kg                                               ligninsulfonic acid     30.0 kg                                               water                   281.0 kg                                                                      1000.0 kg                                             (f) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                ligninsulfonic acid     7.5 kg                                                glucose syrup           7.5 kg                                                phosphoric acid         40.0 kg                                               ethyl parathion         300.0 kg                                              Emcol HJP 1             100.0 kg                                              water                   205.0 kg                                                                      1000.0 kg                                             (g) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                ligninsulfonic acid     7.5 kg                                                glucose syrup           7.5 kg                                                phosphoric acid 85%     40.0 kg                                               Dicamba K, Na--salt     200.0 kg                                              Drysperse               100.0 kg                                              water                   305.0 kg                                                                      1000.0 kg                                             (h) NPK = 8/8/6                                                               chelated trace elements, see above                                                                    4.0 kg                                                diammonium phosphate    102.0 kg                                              potassium sulfate       30.0 kg                                               potassium nitrate       85.0 kg                                               potassium chloride      9.0 kg                                                urea                    102.0 kg                                              Mg--Al silicate         8.0 kg                                                ligninsulfonic acid     7.5 kg                                                glucose syrup           7.5 kg                                                phosphoric acid 85%     40.0 kg                                               Captan                  300.0 kg                                              Drysperse               100.0 kg                                              water                   205.0 kg                                                                      1000.0 kg                                             15. Formulation containing glucose syrup, sodium                              polyphosphate and ligninsulfonic acid                                         NPK = 20/4/8                                                                  chelated trace elements, see above                                                                    8.0 kg                                                potassium sulfate       94.0 kg                                               potassium nitrate       73.0 kg                                               urea                    333.0 kg                                              ammonium nitrate        119.0 kg                                              Na--polyphosphate       59.0 kg                                               Mg--Al silicate         15.0 kg                                               glucose syrup           30.0 kg                                               ligninsulfonic acid     30.0 kg                                               water                   239.0 kg                                                                      1000.0 kg                                             ______________________________________                                    

The storage stability of the fertilizer according to the invention willbe seen from the following Tables; the Tables 9 and 10 are given forcomparison. However, the other Tables also partly contain measurementsof comparison suspensions.

                  TABLE 1                                                         ______________________________________                                        Stability of the suspension fertilizer 16/16/12 measured                      in ml of the settling volume*                                                           settling time expressed in hours                                    dispersing agent                                                                           0      4      8    12   16   20   24                             ______________________________________                                        none        500    100     90   90   90   90   90                             Mg--Al silicates                                                                          500    480    460  450  440  430  430                             Mg--Al silicates                                                                          500    500    500  498  498  497  497                             + sorbitol                                                                    Mg--Al silicates                                                                          500    500    495  490  480  475  473                             + polyvinyl alcohol                                                           Mg--Al silicates                                                                          500    500    500  500  498  495  495                             + ligninsulfonic                                                              acids                                                                         Mg--Al silicates                                                                          500    490    480  475  473  470  470                             + caseinate                                                                   Mg--Al silicates                                                                          500    500    500  498  498  497  497                             + glucose syrup                                                               Mg--Al silicates                                                                          500    500    500  500  498  498  498                             + Na--                                                                        polyphosphate                                                                 Mg--Al silicates                                                                          500    500    500  500  500  500  500                             + caseinate                                                                   + glucose syrup                                                               Mg--Al silicates                                                                          500    500    500  500  500  500  500                             + glucose syrup                                                               + Na--                                                                        polyphosphate                                                                 ______________________________________                                         *Settling volume: distribution volume of the solid phase in liquid.      

                  TABLE 2                                                         ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer 16/16/12             containing Mg--Al silicate + sorbitol                                              Time of the        0.6-  0.43- 0.3-   <0.3                               Year analysis  >1 mm    1 mm  0.6 mm                                                                              0.43 mm                                                                              mm                                 ______________________________________                                        1970 June      --       1.0   4.0   24.0   71.0                                    September --       0.9   4.7   24.5   69.9                                    December  --       1.3   5.6   24.5   68.6                               1971 March     0.10     1.8   5.4   25.6   67.2                                    June      0.10     1.8   6.1   26.4   65.7                                    September 0.10     1.9   6.7   26.9   64.5                                    December  0.15     2.4   7.3   27.1   63.2                               1972 March     0.10     2.3   7.3   27.9   62.5                                    June      0.10     2.7   8.0   28.5   60.8                                    September 0.25     3.1   8.4   28.7   59.8                                    December  0.25     3.5   8.9   29.8   57.8                               ______________________________________                                    

                  TABLE 3                                                         ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer 16/16/12             containing Mg--Al silicate + polyvinyl alcohol                                     Time of the        0.6-  0.43- 0.3-   <0.3                               Year analysis  >1 mm    1 mm  0.6 mm                                                                              0.43 mm                                                                              mm                                 ______________________________________                                        1970 June      --       1.2   4.9   20.1   73.8                                    September --       1.2   5.0   20.0   73.8                                    December  --       1.1   5.0   19.5   74.4                               1971 March     --       1.6   5.9   21.0   71.5                                    June      0.07     2.4   6.1   22.4   69.1                                    September 0.07     2.5   6.0   22.7   68.8                                    December  0.08     2.4   6.1   23.0   68.5                               1972 March     0.08     2.9   6.9   23.9   66.3                                    June      0.08     2.6   7.5   24.5   65.4                                    September 0.10     2.9   7.4   25.0   64.7                                    December  0.10     3.2   8.0   26.3   62.5                               ______________________________________                                    

                  TABLE 4                                                         ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer 16/16/12             containing Mg--Al silicate and ligninsulfonic acids                                Time of the        0.6-  0.43- 0.3-   <0.3                               Year analysis  >1 mm    1 mm  0.6 mm                                                                              0.43 mm                                                                              mm                                 ______________________________________                                        1970 June      --       1.0   5.0   20.0   74.0                                    September --       1.0   5.0   20.2   73.8                                    December  --       1.3   5.1   21.0   72.6                               1971 March     --       1.3   5.5   22.0   71.2                                    June      0.04     1.5   5.9   21.9   70.7                                    September 0.04     1.7   6.2   21.9   70.2                                    December  0.05     1.9   6.5   23.5   68.1                               1972 March     0.05     2.2   6.9   23.9   67.0                                    June      0.07     2.4   7.2   24.3   66.1                                    September 0.07     2.5   7.7   26.1   63.7                                    December  0.10     2.7   8.0   27.2   62.1                               ______________________________________                                    

                  TABLE 5                                                         ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer 16/16/12             containing Mg--Al silicate + caseinate                                             Time of the        0.6-  0.43- 0.3-   <0.3                               Year analysis  >1 mm    1 mm  0.6 mm                                                                              0.43 mm                                                                              mm                                 ______________________________________                                        1970 June      --       0.8   2.7   20.5   76.0                                    September --       0.8   3.2   21.0   75.0                                    December  --       1.0   3.0   22.0   74.0                               1971 March     --       1.0   3.5   22.0   73.4                                    June      0.05     1.4   3.9   22.7   72.0                                    September 0.05     1.4   4.2   23.1   71.3                                    December  0.05     1.7   5.1   23.9   69.3                               1972 March     0.08     2.5   6.0   23.8   67.7                                    June      0.08     2.7   6.0   24.0   67.3                                    September 0.08     2.7   7.5   25.0   64.8                                    December  0.08     3.0   8.2   25.0   63.8                               ______________________________________                                    

                  TABLE 6                                                         ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer 16/16/12             containing Mg--Al silicate + glucose syrup                                         Time of the        0.6-  0.43- 0.3-   <0.3                               Year analysis  >1 mm    1 mm  0.6 mm                                                                              0.43 mm                                                                              mm                                 ______________________________________                                        1970 June      --       0.9   5.5   20.0   73.6                                    September --       1.2   5.9   20.4   72.5                                    December  --       1.9   6.0   21.2   70.9                               1971 March     --       1.7   6.5   22.0   69.8                                    June      0.08     2.1   7.1   22.0   68.8                                    September 0.08     2.0   7.1   22.7   68.2                                    December  0.13     2.5   7.5   22.5   67.5                               1972 March     0.14     2.3   7.5   23.0   67.1                                    June      0.19     2.8   8.1   24.3   64.8                                    September 0.23     3.1   8.0   25.4   63.5                                    December  0.25     3.5   8.2   26.0   62.3                               ______________________________________                                    

                  TABLE 7                                                         ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer 16/16/12             containing Mg--Al silicate + caseinate + glucose syrup                             > Time of          0.6-  0.43- 0.3-   <0.3                               Year the analysis                                                                            1 mm     1 mm  0.6 mm                                                                              0.43 mm                                                                              mm                                 ______________________________________                                        1970 June      --       0.7   3.2   21.0   75.1                                    September --       0.7   3.2   21.0   75.1                                    December  --       0.8   4.1   22.1   73.0                               1971 March     --       1.0   4.6   21.4   73.0                                    June      0.03     1.4   5.0   21.4   72.2                                    September 0.04     1.8   5.2   22.0   71.0                                    December  0.03     1.5   5.4   22.2   70.9                               1972 March     0.05     2.4   6.7   21.9   69.0                                    June      0.07     2.7   7.2   22.1   68.0                                    September 0.07     2.7   7.2   22.0   68.1                                    December  0.08     3.2   8.7   22.4   65.7                               ______________________________________                                    

                  TABLE 8                                                         ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer 16/16/12             containing Mg--Al silicate + glucose syrup + Na--polyphosphate                     Time of the        0.6-  0.43- 0.3-   <0.3                               Year analysis  >1 mm    1 mm  0.6 mm                                                                              0.43 mm                                                                              mm                                 ______________________________________                                        1972 January   --       0.7   4.5   10.0   84.8                                    March     --       0.6   4.7   10.5   84.2                                    June      --       0.8   4.5   10.7   84.0                                    September --       0.7   4.6   11.1   83.6                                    December  --       0.9   5.2   11.2   82.7                               1973 March     --       0.9   5.5   11.9   81.7                                    June      --       1.0   5.9   12.6   80.5                                    September 0.03     1.0   6.2   12.5   80.3                               ______________________________________                                    

                  TABLE 9                                                         ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer composition          16/16/12 containing no dispersing agent                                       Time                                                                          of the                            0.3-   <0.3                                 analysis                                                                             >1 mm    0.6-1 mm 0.43-0.6 mm                                                                            0.43 mm                                                                              mm                                   ______________________________________                                        0      --       2.0      3.0      20     75                                   8      --       3.0      4.0      23     70                                   16     --       4.5      5.5      25     65                                   24     0.5      5.0      6.0      28.5   60                                   32     3.5      9.2      7.0      29.3   51                                   40     12       12.5     10.0     30.2   35.3                                 48     20       13       11.5     31.0   24.5                                 56     completely crystallized                                                ______________________________________                                    

                  TABLE 10                                                        ______________________________________                                        Crystal size distribution (%) of a suspension fertilizer                      16/16/12 containing Mg--Al silicate                                           but no other dispersing agent                                                 Time                                                                          of the                            0.3-   <0.3                                 analysis                                                                             >1 mm    0.6-1 mm 0.43-0.6 mm                                                                            0.43 mm                                                                              mm                                   ______________________________________                                        0      --       1.0      5.6      19.7   73.7                                 2      --       1.2      5.4      20.5   72.9                                 4      --       1.3      5.7      20.9   72.1                                 6      0.5      1.3      5.9      21.0   71.3                                 8      0.7      1.5      6.2      18.4   73.2                                 10     1.0      1.7      6.9      22.5   67.9                                 12     1.4      1.9      7.0      23.0   66.7                                 14     1.9      2.5      7.5      25.7   62.4                                 16     1.9      2.9      7.5      28.4   59.3                                 18     2.1      2.7      8.4      29.2   57.6                                 ______________________________________                                    

What is claimed is:
 1. In a fertilizer of the type which is in the formof a dispersion of undissolved nutrient materials in aqueous mediumcontaining nutrient materials in solution, the dispersion alsocontaining as dispersing agent a hydrated magnesium-aluminum silicate,the improvement for eliminating the necessity for continuous or regularmechanical blending to avoid formation of large crystals and phaseseparation during prolonged storing up to 2 or 3 years comprising atleast one additional dispersing agent, selected from the groupconsisting of sorbitol in an amount 0.1 to 5%, polyvinyl alcohol in anamount of 0.1 to 5% by weight, a caseinate in an amount of 0.1 to 5% byweight and a soluble starch hydrolysate in an amount of 0.1 to 8% byweight, the total concentration of said additional dispersing agentamounting to from 0.1 to 14% by weight, relative to the finishedfertilizer.
 2. The improved fertilizer according to claim 1, whereinsaid additional dispersing agent is sorbitol.
 3. The improved fertilizeraccording to claim 1, wherein said additional dispersing agent ispolyvinyl alcohol.
 4. The improved fertilizer according to claim 1,wherein said additional dispersing agent is a caseinate selected fromthe group consisting of alkaline metal caseinates, alkaline earth metalcaseinates, and mixtures thereof.
 5. The improved fertilizer accordingto claim 1, wherein the additional dispersing agent is a soluble starchhydrolysate and is glucose syrup.
 6. Process of preparing a fertilizerin the form of a concentrated dispersion which comprises introducingsufficient plant nutrients into an aqueous solution of plant nutrientsso as to form a dispersion of such nutrients in said aqueous solution,including a magnesium-aluminum silicate as a dispersing agent andadditionally introducing at least one additional dispersing agent,selected from the group consisting of sorbitol in an amount 0.1 to 5%,polyvinyl alcohol in an amount of 0.1 to 5% by weight, a caseinate in anamount of 0.1 to 5% by weight, and a soluble starch hydrolysate in anamount of 0.1 to 8% by weight, the total concentration of saidadditional dispersing agent amounting to from 0.1 to 14% by weight, saidpercentages by weight being calculated with respect to the finishedfertilizer, whereby formation of large crystals and settling of solidsin the fertilizer dispersion are inhibited and stabilization overprolonged periods assured.